<template>
    <div style="padding: 10px">
        <!--      功能区域-->
        <div style="margin: 10px 0">
            <el-button type="primary" @click="add()">新增</el-button>
        </div>
        <!--      搜索区域-->
        <div style="margin: 10px 0">
            <el-input v-model="search" placeholder="请输入关键字" style="width: 20%" clearable/>
            <el-button type="primary" style="margin-left: 10px" @click="load">查询</el-button>
        </div>
        <!--      数据展示-->
        <el-table :data="tableData" stripe style="width: 100%">
            <el-table-column prop="id" label="ID" sortable/>
            <el-table-column prop="username" label="用户名"/>
            <el-table-column prop="nickName" label="昵称"/>
            <el-table-column prop="age" label="年龄"/>
            <el-table-column prop="sex" label="性别"/>
            <el-table-column label="角色">
                <template #default="scope">
                    <span v-if="scope.row.role === 1">管理员</span>
                    <span v-if="scope.row.role === 2">普通用户</span>
                </template>
            </el-table-column>
            <el-table-column prop="address" label="地址"/>
            <el-table-column fixed="right" width="260" label="操作">
                <template #default="scope">
                    <el-button plain type="primary" @click="showBooks(scope.row.bookList)">查看图书列表</el-button>
                    <el-button plain type="primary" @click="handleEdit(scope.row)">编辑</el-button>
                    <el-popconfirm title="确认删除吗？" @confirm="handleDelete(scope.row.id)">
                        <template #reference>
                            <el-button plain style="color: red">删除</el-button>
                        </template>
                    </el-popconfirm>
                </template>
            </el-table-column>
        </el-table>

        <el-dialog title="用户拥有的图书列表" v-model="bookVis" width="30%">
            <el-table :data="bookList" stripe border>
                <el-table-column prop="id" width="80%" label="ID"></el-table-column>
                <el-table-column prop="name" label="名称"></el-table-column>
                <el-table-column prop="price" width="80%" label="价格"></el-table-column>
            </el-table>
        </el-dialog>

        <div style="margin: 10px 0">
            <el-pagination
                    :currentPage="currentPage"
                    :page-size="pageSize"
                    :page-sizes="[5, 10, 20]"
                    :small="small"
                    :disabled="disabled"
                    :background="background"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total"
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
            />

            <el-dialog
                    v-model="dialogVisible"
                    title="输入信息"
                    width="30%"
            >
                <el-form :model="form" label-width="120px">
                    <el-form-item label="用户名">
                        <el-input v-model="form.username" style="width: 80%"/>
                    </el-form-item>
                    <el-form-item label="昵称">
                        <el-input v-model="form.nickName" style="width: 80%"/>
                    </el-form-item>
                    <el-form-item label="年龄">
                        <el-input v-model="form.age" style="width: 80%"/>
                    </el-form-item>
                    <el-form-item label="性别">
                        <el-radio v-model="form.sex" label="男">男</el-radio>
                        <el-radio v-model="form.sex" label="女">女</el-radio>
                        <el-radio v-model="form.sex" label="未知">未知</el-radio>
                    </el-form-item>
                    <el-form-item label="角色">
                        <el-radio v-model="form.role" label="1">管理员</el-radio>
                        <el-radio v-model="form.role" label="2">普通用户</el-radio>
                    </el-form-item>
                    <el-form-item label="地址">
                        <el-input type="textarea" v-model="form.address" style="width: 80%"/>
                    </el-form-item>
                </el-form>
                <template #footer>
                  <span class="dialog-footer">
                    <el-button @click="dialogVisible = false">取消</el-button>
                    <el-button type="primary" @click="save()"
                    >确认</el-button
                    >
                  </span>
                </template>
            </el-dialog>
        </div>
    </div>
</template>

<script>

    import api from "../api/index"
    import {ElMessage} from "element-plus";

    export default {
        name: 'User',
        components: {},
        data() {
            return {
                search: '',
                currentPage: 1,
                pageSize: 10,
                total: 0,
                tableData: [],
                dialogVisible: false,
                form: {},
                bookList: [],
                bookVis: false,
            }
        },
        created() {
            this.load()
        },
        methods: {
            showBooks(bookList) {
                this.bookList = bookList
                this.bookVis = true
            },
            load() {
                api.getUser({
                    params: {
                        pageNum: this.currentPage,
                        pageSize: this.pageSize,
                        search: this.search
                    }
                }).then(res => {
                    this.total = res.data.data.total
                    this.tableData = res.data.data.records
                })
            },
            add() {
                this.dialogVisible = true
                this.form = {}
            },
            save() {
                if (this.form.id) {  //更新
                    api.updateUser(this.form).then(res => {
                        this.handleResult_1(res, '更新成功', '更新失败')
                    }).catch(res => {
                        this.handleResult_2('更新失败')
                    })
                } else {    // 新增
                    api.addUser(this.form).then(res => {
                        this.handleResult_1(res, '新增成功', '新增失败')
                    }).catch(res => {
                        this.handleResult_2('新增失败')
                    })
                }

                this.dialogVisible = false
                this.form = {}
            },
            handleEdit(row) {
                this.form = JSON.parse(JSON.stringify(row))
                this.dialogVisible = true
            },
            handleDelete(id) {
                api.deleteUser(id).then(res => {
                    this.handleResult_1(res, '删除成功', '删除失败')
                }).catch(res => {
                    this.handleResult_2('删除失败')
                })
            },
            handleSizeChange(pageSize) {    // 改变当前每页的显示个数触发
                this.pageSize = pageSize
                this.load()
            },
            handleCurrentChange(pageNum) {    // 改变当前页码触发
                this.currentPage = pageNum
                this.load()
            },
            handleResult_1(res, msg1, msg2) {   // 提示操作成功或者失败
                if (res.data.code == "0") {
                    ElMessage({
                        message: msg1,
                        type: 'success'
                    })
                    this.load()    // 操作成功后重载数据
                } else {
                    ElMessage.error(msg2)
                }
            },
            handleResult_2(msg) {   // 操作异常时提示
                ElMessage.error(msg)
            }
        }
    }

</script>
